Mariel Hemingway was 24 in Superman IV: The Quest for Peace when she played the character 'Lacy Warfield'.
That was over 37 years ago in 1987.
Today she is 62, and has starred in 54 movies in total, 45 of those since Superman IV: The Quest for Peace was released.
In Superman IV: The Quest for Peace, I think Mariel Hemingway looks: